package com.wc.alorithm_luogu.P1551;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.util.HashMap;
import java.util.HashSet;

/**
 * @Author congge
 * @Date 2023/5/23 19:22
 * @description
 */
public class Main {
    public static void main(String[] args) {
        Input sc = new Input();
        HashMap<Integer, HashSet<Integer>> map = new HashMap<>();
        int n = sc.nextInt();

        for (int i = 1; i <= n; i++) {
            HashSet<Integer> set = new HashSet<>();
            set.add(i);
            map.put(i, set);
        }

        System.out.println();
    }


    static class Input {
        StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));

        public int nextInt() {
            try {
                in.nextToken();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return (int) in.nval;
        }
    }
}
